php build fails when cache is enabled

Adding --mount=type=cache,id=apk,sharing=locked,target=/var/cache/apk ln -vs /var/cache/apk /etc/apk/cache && \ to the following Dockerfile, makes it failt to build on linux
Funny enough works fine on macos

#32 9.570 checking for icu-config... no
#32 9.571 checking for location of ICU headers and libraries... not found
#32 9.571 configure: error: Unable to detect ICU prefix or no failed. Please verify ICU install prefix and make sure icu-config works.
#32 [php70 13/15] RUN --mount=type=cache,id=apk,sharing=locked,target=/var/c...
#32 ERROR: executor failed running [/bin/sh -c apk add --update --virtual .build-deps 	$PHPIZE_DEPS 	&& docker-php-ext-configure bcmath --enable-bcmath 	&& docker-php-ext-configure intl --enable-intl 	&& docker-php-ext-configure pcntl --enable-pcntl 	&& docker-php-ext-configure pdo_mysql --with-pdo-mysql 	&& docker-php-ext-configure mbstring --enable-mbstring 	&& docker-php-ext-configure soap --enable-soap]: exit code: 1
#17 [nginx-base 5/5] RUN --mount=type=cache,id=wheel,sharing=locked,target=/...
#17 CANCELED

# syntax=docker/dockerfile:experimental

FROM php:7.0-fpm-alpine AS php70

WORKDIR /var/www
RUN adduser -DHSu 100 nginx -s /sbin/nologin

COPY ./opcache.ini /usr/local/etc/php/conf.d/opcache.ini
COPY ./opcache.ini /usr/local/etc/php-fpm.d/opcache.ini

RUN --mount=type=cache,id=apk,sharing=locked,target=/var/cache/apk ln -vs /var/cache/apk /etc/apk/cache && \
	apk add --update --virtual build-dependencies \
	$PHPIZE_DEPS \
	autoconf \
	automake \
	build-base \
	cmake \
	curl-dev \
	file \
	g++ \
	gcc \
	gettext-dev \
	git \
	icu-dev \
	libc-dev \
	libmcrypt-dev \
	libpng-dev \
	libressl-dev \
	libtool \
	libxml2-dev \
	libxslt-dev \
	make \
	nasm \
	pcre-dev \
	pkgconf \
	re2c \
	sqlite-dev \
	wget \
	zlib-dev

# syntax=docker/dockerfile:experimental

FROM php:7.0-fpm-alpine AS php70

WORKDIR /var/www
RUN adduser -DHSu 100 nginx -s /sbin/nologin

COPY ./opcache.ini /usr/local/etc/php/conf.d/opcache.ini
COPY ./opcache.ini /usr/local/etc/php-fpm.d/opcache.ini

RUN apk add --update --virtual build-dependencies \
	$PHPIZE_DEPS \
	autoconf \
	automake \
	build-base \
	cmake \
	curl-dev \
	file \
	g++ \
	gcc \
	gettext-dev \
	git \
	icu-dev \
	libc-dev \
	libmcrypt-dev \
	libpng-dev \
	libressl-dev \
	libtool \
	libxml2-dev \
	libxslt-dev \
	make \
	nasm \
	pcre-dev \
	pkgconf \
	re2c \
	sqlite-dev \
	wget \
	zlib-dev

macos

Client: Docker Engine - Community
 Version:           19.03.1
 API version:       1.40
 Go version:        go1.12.5
 Git commit:        74b1e89
 Built:             Thu Jul 25 21:18:17 2019
 OS/Arch:           darwin/amd64
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          19.03.1
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.5
  Git commit:       74b1e89
  Built:            Thu Jul 25 21:17:52 2019
  OS/Arch:          linux/amd64
  Experimental:     true
 containerd:
  Version:          v1.2.6
  GitCommit:        894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc:
  Version:          1.0.0-rc8
  GitCommit:        425e105d5a03fabd737a126ad93d62a9eeede87f
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Ubuntu 19.04

Client: Docker Engine - Community
 Version:           19.03.1
 API version:       1.40
 Go version:        go1.12.5
 Git commit:        74b1e89
 Built:             Thu Jul 25 21:21:22 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.1
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.5
  Git commit:       74b1e89
  Built:            Thu Jul 25 21:19:53 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.6
  GitCommit:        894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc:
  Version:          1.0.0-rc8
  GitCommit:        425e105d5a03fabd737a126ad93d62a9eeede87f
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Reproduce the failure with the provided PHP 7.0 Alpine Dockerfile, first comparing the cache-mounted RUN command with the working command and the listed Docker Engine experimental settings. Investigate the cache-mount handling around apk and ICU detection; done means the Linux build succeeds with the cache enabled without breaking the existing macOS behavior.